package com.piggy.sys.domain;//如果JDK版本低于1.8,请使用三方库提供Base64类
//import org.apache.commons.codec.binary.Base64;

import com.piggy.sys.domain.vo.SysMsgTemplateVo;
import org.apache.commons.codec.binary.Hex;
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.http.HttpHeaders;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.methods.RequestBuilder;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.ssl.SSLContextBuilder;
import org.apache.http.util.EntityUtils;
import org.springframework.stereotype.Component;

import java.nio.charset.StandardCharsets;
import java.text.SimpleDateFormat;
import java.util.*;

//如果JDK版本是1.8,可使用原生Base64类

@Component
public class SendSms {

	//无需修改,用于格式化鉴权头域,给"X-WSSE"参数赋值
	private static final String WSSE_HEADER_FORMAT = "UsernameToken Username=\"%s\",PasswordDigest=\"%s\",Nonce=\"%s\",Created=\"%s\"";
	//无需修改,用于格式化鉴权头域,给"Authorization"参数赋值
	private static final String AUTH_HEADER_VALUE = "WSSE realm=\"SDP\",profile=\"UsernameToken\",type=\"Appkey\"";

	/**
	 * 发送模板短信
	 * @param receivers 接收人，批量发送用‘,’分割
	 * @param vo 模板
	 * @return 响应结果
	 * @throws Exception ex
	 */
	public String sendMsg(String receivers, SysMsgTemplateVo vo, String templateParas) throws Exception {

		//必填,请参考"开发准备"获取如下数据,替换为实际值
		String url = "https://rtcsms.cn-north-1.myhuaweicloud.com:10743/sms/batchSendSms/v1"; //APP接入地址+接口访问URI
//        String url = "https://rtcsms.cn-north-1.myhuaweicloud.com:10743"; //APP接入地址+接口访问URI
		String appKey = vo.getMsgKey(); //APP_Key
		String appSecret = vo.getMsgSecret(); //APP_Secret
		String sender = "99200620888880003825"; //国内短信签名通道号或国际/港澳台短信通道号
//		String templateId = "c05eaa15b0a047e5a553b19100aa8a1a"; //模板ID
		String template = vo.getContent(); //模板ID

		//条件必填,国内短信关注,当templateId指定的模板类型为通用模板时生效且必填,必须是已审核通过的,与模板类型一致的签名名称
		//国际/港澳台短信不用关注该参数
		String signature = "智融云链"; //签名名称

		//必填,全局号码格式(包含国家码),示例:+8615123456789,多个号码之间用英文逗号分隔
//        String receiver = "+8618206633843,+8615234567890"; //短信接收人号码

		//选填,短信状态报告接收地址,推荐使用域名,为空或者不填表示不接收状态报告
		String statusCallBack = "";

		/*
		 * 选填,使用无变量模板时请赋空值 String templateParas = "";
		 * 单变量模板示例:模板内容为"您的验证码是${1}"时,templateParas可填写为"[\"369751\"]"
		 * 双变量模板示例:模板内容为"您有${1}件快递请到${2}领取"时,templateParas可填写为"[\"3\",\"人民公园正门\"]"
		 * 模板中的每个变量都必须赋值，且取值不能为空
		 * 查看更多模板和变量规范:产品介绍>模板和变量规范
		 */
//		String templateParas = "[\"456789\"]"; //模板变量

		//请求Body,不携带签名名称时,signature请填null
		String body = buildRequestBody(sender, receivers, template, templateParas, statusCallBack, signature);
		if (null == body || body.isEmpty()) {
			System.out.println("body is null.");
			return null;
		}

		//请求Headers中的X-WSSE参数值
		String wsseHeader = buildWsseHeader(appKey, appSecret);
		if (null == wsseHeader || wsseHeader.isEmpty()) {
			System.out.println("wsse header is null.");
			return null;
		}

		//如果JDK版本低于1.8,可使用如下代码
		//为防止因HTTPS证书认证失败造成API调用失败,需要先忽略证书信任问题
		//CloseableHttpClient client = HttpClients.custom()
		//        .setSSLContext(new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
		//            @Override
		//            public boolean isTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException {
		//                return true;
		//            }
		//        }).build()).setSSLHostnameVerifier(NoopHostnameVerifier.INSTANCE).build();

		//如果JDK版本是1.8,可使用如下代码
		//为防止因HTTPS证书认证失败造成API调用失败,需要先忽略证书信任问题
		CloseableHttpClient client = HttpClients.custom()
			.setSSLContext(new SSLContextBuilder().loadTrustMaterial(null,
				(x509CertChain, authType) -> true).build())
			.setSSLHostnameVerifier(NoopHostnameVerifier.INSTANCE)
			.build();

		HttpResponse response = client.execute(RequestBuilder.create("POST")//请求方法POST
			.setUri(url)
			.addHeader(HttpHeaders.CONTENT_TYPE, "application/x-www-form-urlencoded")
			.addHeader(HttpHeaders.AUTHORIZATION, AUTH_HEADER_VALUE)
			.addHeader("X-WSSE", wsseHeader)
			.setEntity(new StringEntity(body)).build());

		System.out.println(response.toString()); //打印响应头域信息
		String x = EntityUtils.toString(response.getEntity());
		System.out.println(x); //打印响应消息实体
		return x;
	}

	/**
	 * 构造请求Body体
	 *
	 * @param sender 国内短信签名通道号或国际/港澳台短信通道号
	 * @param receiver 接收人
	 * @param templateId 模板id
	 * @param templateParas 模板参数
	 * @param statusCallbackUrl 短信状态报告接收地址
	 * @param signature         | 签名名称,使用国内短信通用模板时填写
	 * @return str
	 */
	static String buildRequestBody(String sender, String receiver, String templateId, String templateParas,
								   String statusCallbackUrl, String signature) {
		if (null == sender || null == receiver || null == templateId || sender.isEmpty() || receiver.isEmpty()
			|| templateId.isEmpty()) {
			System.out.println("buildRequestBody(): sender, receiver or templateId is null.");
			return null;
		}
		List<NameValuePair> keyValues = new ArrayList<>();

		keyValues.add(new BasicNameValuePair("from", sender));
		keyValues.add(new BasicNameValuePair("to", receiver));
		keyValues.add(new BasicNameValuePair("templateId", templateId));
		if (null != templateParas && !templateParas.isEmpty()) {
			keyValues.add(new BasicNameValuePair("templateParas", templateParas));
		}
		if (null != statusCallbackUrl && !statusCallbackUrl.isEmpty()) {
			keyValues.add(new BasicNameValuePair("statusCallback", statusCallbackUrl));
		}
		if (null != signature && !signature.isEmpty()) {
			keyValues.add(new BasicNameValuePair("signature", signature));
		}

		return URLEncodedUtils.format(keyValues, StandardCharsets.UTF_8);
	}

	/**
	 * 构造X-WSSE参数值
	 *
	 * @param appKey key
	 * @param appSecret secret
	 * @return str
	 */
	static String buildWsseHeader(String appKey, String appSecret) {
		if (null == appKey || null == appSecret || appKey.isEmpty() || appSecret.isEmpty()) {
			System.out.println("buildWsseHeader(): appKey or appSecret is null.");
			return null;
		}
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
		String time = sdf.format(new Date()); //Created
		String nonce = UUID.randomUUID().toString().replace("-", ""); //Nonce

		byte[] passwordDigest = DigestUtils.sha256(nonce + time + appSecret);
		String hexDigest = Hex.encodeHexString(passwordDigest);

		//如果JDK版本是1.8,请加载原生Base64类,并使用如下代码
		String passwordDigestBase64Str = Base64.getEncoder().encodeToString(hexDigest.getBytes()); //PasswordDigest
		//如果JDK版本低于1.8,请加载三方库提供Base64类,并使用如下代码
		//String passwordDigestBase64Str = Base64.encodeBase64String(hexDigest.getBytes(Charset.forName("utf-8"))); //PasswordDigest
		//若passwordDigestBase64Str中包含换行符,请执行如下代码进行修正
		//passwordDigestBase64Str = passwordDigestBase64Str.replaceAll("[\\s*\t\n\r]", "");

		return String.format(WSSE_HEADER_FORMAT, appKey, passwordDigestBase64Str, nonce, time);
	}
}
